Plan ahead! Due to a scheduled system software upgrade, MetroCard vending machines may not be accepting credit or debit card purchases from Friday, February 2, at 11:45PM, to Monday, February 5, at 5:00AM. Purchase MetroCards before Friday evening or use cash.
— NYCT Subway (@NYCTSubway) February 1, 2018
MetroCard vending machines may not accept debit or credit card purchases throughout the weekend, New York City Transit warned subway riders on Wednesday. The planned outage will last from Friday at 11:45 p.m. through Monday at 5 a.m. and is due to a "scheduled system software upgrade," according to NYC Transit.